Hook device



May 179 1927. 1,629,438

c. w. DAKE HOOK DEVICE Original Filed Aug. 11. 1922 .Dl 134 j i .AR- l) d-D IRT/envo? Patented May 17, 1.927.

uNrrE-o ASTAT-las PATENT oFF-lcs.

CHARLES W. DARE, OF CHICAGO, 1LLIN0IS,VASSIGN0R T0 THE` PYLE-NATIONAL COM- PANY, CF CHICAGO, ILLENOIS, A CORPORATION F NEW JERSEY.

HCOK DEVICE.

originel application mea August 11,

This invention relates to a hook device.,

The form here shown is particularly advantageous for use in hooking openings and doors, such v:for exam le as that of a head- 5 light casing. It is, o course, adaptable for any purpose, however, where a hook is useful. It has for one object to provide a hook which is strong and which will automatically go into operation when the door to which l0 it is applied is moved or slammed which after having gone into operation is locked and requires specilic manipulation of the various parts to free it to permit the door to open. Another 'object is therefore to provide a self-locking latch or hook for doors. Other objects will appear from-time to time throughout the specification and claims.

This application is a divisionv of my' co- A2i pending application Serial Number 581.081,

tiled August 11, 1922.

' My invention is illustrated.more or lessdiagrammatically in the accompanying drawings, wherein:

Figure l is an elevation with parts in section showing my latch:

Figure 2 is a vertical cross section taken on the line Q Q of Figurevl.

Like parts are' designated by like characters throughout.

A is a stationary portion to which a door A1 is hinged. The latch mechanism is intended 'to fasten the door closed in the position shownin Figure 1. The latch is composed of a handle B which is'pivoted on the door at B1 and provided with an upper extension B2 and a. hook shaped lock engaging' member B3.' The. hook shaped member is progressively thickened from this point- 40- and is in effect thus provided with an outer cam face B4. This member is adapted to engage a pin C on the main stationary frame.Y The inner face of the hook B isl so shaped that it at first engages the pin C and then as the handle B is forced further down, it progressively tends to draw the pin C into tighter engagement.

Pivoted upon this pin is a locking dog D.

It is provided on its inner face with an inwardly extending projection D1 adapted when in the locking position to contact the lower face of the hook B3. and adapted when it is desired to open the latch. to be swung up out of the engaging position. Because of shut, and

1922, Serial No. 581,081'. Divided and this application vtiled March 7, 1 924. Serial No. 697,457.

the shape of the. hook member B3, as the latch member D is moved further about itv the member-D1 locks with increasing force.

the door outward and open.

Although 'Ihave shown an operative devlce, st1l l it will be .obvious that many changes 1n size, shape and arrangement of parts may be made without departing materlally from the spirit of my invention; and I wish therefore that my showing be taken as m a sense diagrammatic.

The use` and operation of my invention 'are as follows:

When the door is to be closed the latch handle is raised so that the hook is below the center of the latch pin and the door is then closed and the handle depressed. In this position the latch engaging hook is engaged by the pin on the stationary7 part and is itself engaged on its under side by the locking dog which is pivoted on the latch pin. In this position the parts are locked against accidental opening movement. Even movement of the latch handle will not suftice to free the latch and open the door, because the locking dog will cramp against the latch engaging hook and prevent its freeing movement. In lorder to open the latch it is necessary to raise the dog so that it no longer engages the hook` and then the latch handle may be rotated upward and the hook will be rotated out of engagement with the pin.

iVhen this movement is completed the upper extension of the handle is brought into contact with the pin and bears against it forcing the door open. Thus my invention constitutes at. once an automatic locking safety latch and a lever means for opening a door which is jammed or for any other reason is difficult to open.

1. In a hook device including in combina.- tiou a casing and a door hinged thereto, a pin on said casing and a latch pivoted on said door and provided with a hook for engaging said pin, a locking member pivoted on said pin and adapted when in one posidrawal from the pin, The lower faee of said hook member beine eeeentrie with relation to said pin and adapted to be wedged against (he inner fare of' `Quid locking! member when in locking, position.

Q. n combination with a easino` u door adapted lo eloee 'the same and mounted for movement. with relation thereto` a pin on one of Said pars and a hook latch on the, other, said hook hileh adapted to engage said pin, the. lower l'aee of the hook member of said laieh beine; eeeenlrie with rehition to said pin, there beingmounted on said pin a locking member adapted when in one position 'to engage said hook to prevent its withdrawal from the pin and adapted to be wedged against the lower face of said hook member when in the loelnmgY position, said laeh member provided with a lever face adapted to bear against said pin to force the door open.

Signed at Chicago, county of Cookand Slate of Illinois, this 1st day of March, 1924.

CHARLES W. DKE. 

